Home / 101,890.41-140,613.31-56,569.02

Finding the Fourth Proportional to 101,890.41, 140,613.31 and 56,569.02

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Solution

The fourth proportional to 101,890.41, 140,613.31 and 56,569.02 is: 78,067.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,890.41 : 140,613.31 = 56,569.02 : x
  2. Step 2: Convert to fraction form
    101,890.41/140,613.31 = 56,569.02/x
  3. Step 3: Cross multiply
    101,890.41x = 140,613.31 × 56,569.02
  4. Step 4: Simplify right side
    101,890.41x = 7,954,357,145.66
  5. Step 5: Solve for x
    x = 7,954,357,145.66/101,890.41
  6. Step 6: Final answer
    x = 78,067.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.